Cascading phase shift and multivalued response in counterpropagating frequency-nondegenerate parametric amplifiers.

Optics letters

PubMedID: 18064242

Gallo K, Baldi P, De Micheli M, Ostrowsky DB, Assanto G. Cascading phase shift and multivalued response in counterpropagating frequency-nondegenerate parametric amplifiers. Opt Lett. 2000;25(13):966-8.
We propose and analyze a novel geometry for all-optical processing of low-power signals that is based on a frequency-nondegenerate counterpropagating parametric amplifier. The stationary response in the cascading regime exhibits multivalued solutions with enhanced nonlinear phase shifts. Implementation in a quasi-phase-matched LiNbO(3) waveguide is discussed.